Evaporative humidifier



FIG. 1 is a front, right perspective view of an evaporative humidifier;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a plan view thereof;

FIG. 5 is a bottom plan view thereof; and,

FIG. 6 is a left side elevational view.

The right side elevation is a mirror image of the left side elevation.

The broken line showing of environmental structure in FIGS. 1, 2, 3, 4, and 6 is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for an evaporative humidifier, as shown and described. 